Die sizes of some dome-less leds

The FC 40 is really big :open_mouth:

No B35A ?

I measured 3.1~3.15mm
The datasheet says 3.12mm

Thanks, no I have no B35A.

I just wanted to post the picture actually, but Hoop convinced me to add the names and die sizes.

The Yingding looks interesting

Aspheric light

Source

Great comparison!

Are there some further info on the Yinding round emitter LED?
It seems interesting for a C8 thrower mod.

It’s interesting that you measured OSRAM KW CSLNM1-TG to be 11% and KW CSLPM1-TG 8% smaller than the datasheet says.
OTOH your CREE measurements are quite consistent with what others measured before.

Very cool, I found the emitter on Taobao. It seems to be designed for projectors. This might induce me to do my first mod with a 8A driver. The beam should be very beautiful - it might even look good in a zoomie.

There is some additional information on the Taobao page. Apparently it is 5900-6300K. There is also one with a glass lens at 5000k.

https://item.taobao.com/item.htm?spm=a1z0d.6639537.1997196601.4.34dd7484B7vPWd&id=653721646372

I contacted the seller on Taobao and they said that the Yinding does 1800 lumens at 8A. If so, the intensity should be very close to an Osram W2. I’m eagerly waiting for the Djozz test and hope the Vf is low.

Things went wrong in the household, that consumed my free time this week. I hope doing the test soon.

No worries, I can wait :smiley: take care

You’re doing this for free for the community. Please take your time and don’t worry (:

My yinding emitters are hung up in shipping :frowning: I’m dying to test them out! Looks like you might beat me to it.

I also was indecisive too long on the SFT70 and missed the boat. My thought was that the emitter plus a suitable driver was going to cost about the same as a 90.2 and FET driver. The 90.2 can be had in 5700K as well.

I’ll be refreshing this page for the next few days

Anxiously awaiting your impressions of the YD5050. TomE’s and my package is held up at port somewhere since 10-29

I built one C8+ with these YinDings. I haven’t really tinkered with it yet for optimal centering and focus, but at least I can confirm it can take 8A and produced light leans heavily towards greener side of BBL. Even without perfect focus, the hotspot seems similar with Culpm1 or whatever catchy name it has.

There seems to be another variation of this emitter from YD. It has a clear flat encapsulation that looks like the glass Osrams.
https://m.aliexpress.com/item/1005003092500000.html

Yep, the 5000k version has a glass lens

Green is never ideal, especially since it desaturates colors, but if this one can hit 1mm² osram surface brightness and double the lumens from a round LES, let it be (a bit) green! <:)

I think it’ll be a great sft40 alternative for 18650 lights. Since its only 2mm², even 6A should throw really well if efficacy isn’t crap. I like to upgrade to a 21700 platform for the 8-9A the Luminus wants. I’ve never warmed up to the PM1 because of its asymmetric corona /rectangular die other than in a D4S where the quad orientation averages this out. It also begs for a collared aspheric build.

Target reflectored hosts for this emitter imo would be in the size range of the (Convoy) M2, D80v2, and C8+. Smaller won’t handle the wattage and larger will be too pencil beam for my taste. Ymmv.

I use LD-4A set to 7A-9A. Seems to work fine in C8+ with Culpm1 and YinDing. I really like Culpm1 in C8+ driven at 8A. Probably my favorite thrower. I like it more than L21B with SFT-40. Beam is purer and warmer white and throws almost as far, when viewed with bare eye. L21B might throw further, but weather must be crystal clear with it.

Djozz’s test of the yinding 5050 round die.

BTW.

I did pixel counting measurements of my own photos of the emitters and the areas that I’m gettting are as follows:

CSL NM1 - 1.04mm²
CSL PM1 - 1.97mm²
YD5050 glass - 2.22mm²
YD5050 silicone - 2.12mm²

You get slightly higher numbers, and the Yinding is a bit closer to the PM1 than in my attempt to measure them.